Extended visual cryptography for color images using coding tables

Kamath, M P; Parab, Arpita; Salyankar, Aarti; Dholay, Surekha

doi:10.1109/iccict.2012.6398090

Cited by 9 publications

(4 citation statements)

References 7 publications

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“…4. As previously mentioned, the main advantage for this technique is increased security as compared to traditional VC through the construction of meaningful shares [49,67,91,105]. EVC is useful for applications such as copyright protection because the same watermark can be embedded in each meaningful share and recovered when combined with a master share [52].…”

Section: Type Of Sharesmentioning

confidence: 99%

“…Depending on the application, a higher number of shares can either be an advantage or disadvantage. For example, the scheme in [79] only has 2 shares, which is good for storage capacity (reduced memory requirement) as compared to the scheme in [49] which has 4 shares. However, having more shares leads to more flexibility as more parties can hold on to the shares.…”

Section: Comparison Of Visual Cryptography Schemesmentioning

confidence: 99%

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An overview of visual cryptography techniques

Ibrahim

Teh

Abdullah

2021

Multimed Tools Appl

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Visual cryptography is an encryption technique that decomposes secret images into multiple shares. These shares are digitally or physically overlapped to recover the original image, negating the need for complex mathematical operations or additional hardware. There have been many variations of visual cryptography proposed over the years, each addressing different problems or to fulfill different security requirements. Existing review papers on the area only cover certain types of visual cryptography or lack comparisons between the various schemes. To address this gap, this paper provides broad overview of the area to aid new researchers in identifying research problems or to select suitable visual cryptography methods for their desired applications. For more veteran researchers in the area, our paper provides the most up-to-date coverage of the state-of-the-art. We first provide an introduction to the various categories of visual cryptography techniques, including a discussion on recently proposed schemes. These schemes are then compared in terms of their features, performance metrics, advantages and disadvantages. Compared to prior work, we extend the number of comparison metrics to include signal-to-noise ratio and the type of shares. Over 40 visual cryptography schemes that have been proposed in the past two decades were analyzed and compared. Our findings indicate that existing problems such as pixel expansion, poor quality of recovered image quality, computational and memory complexities still exist, and a optimizing the trade-off between these requirements still requires further investigation. We conclude the paper with a discussion of these open problems and future research directions.

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Section: Type Of Sharesmentioning

confidence: 99%

Section: Comparison Of Visual Cryptography Schemesmentioning

confidence: 99%

An overview of visual cryptography techniques

Ibrahim

Teh

Abdullah

2021

Multimed Tools Appl

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“…Further Extended visual cryptography for color images using coding tables by Meera Kamath and Arpita Parab [3] proposed scheme make use of Jarvis error filter, a key table and specialized tables for coding. It works on the same principle as Adi and Shamir's cryptography.…”

Section: Literature Surveymentioning

confidence: 99%

Visual Cryptography using Quadri Directional Search Algorithm with Remote Accessibility

Rao¹

2020

IJERT

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Gathering intelligence plays a vital role in safeguarding a nation from insurgency and offensive military strikes from hostile countries. It is recommended to provide logistic support to the armed forces constantly thereby keeping them informed of the ground situation and alert them in advance to acquire an advantage. Surveillance is achieved via satellite imaging. Such confidential images captured are to be transmitted in real time securely to avoid any third party from interpreting them. This can be obtained by utilizing Visual Cryptography. Visual Cryptography secret image sharing ensures security of the transmitted information by splitting a secret image into n shares which are owned by n participants to prevent the secret from accidentally being lost. Existing algorithms provide solutions for problems such as secret information leaking from shares, attack on share images and large share image issues but their time complexity is still debatable. Therefore, the proposed Quadri directional search algorithm technique can be implemented for encrypting the information.

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“…Thus motivated, the secret-sharing method will be the better technique that not only increases the security but also has an extremely high opportunity of recovering the secret information completely. Visual cryptography is a sensible choice for conserving the privacy of a color covert image [2]. It is an evolving cryptography technology that uses human vision for decryption.…”

Section: Introductionmentioning

confidence: 99%

Advanced Color Covert Image Sharing Using Arnold Cat Map and Visual Cryptography

Sapna¹,

Sudha²

2019

IJIVP

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The demand for effective information security schemes is increasing day by day with the continual growth of the internet. Visual cryptography (VC) is a very important secret sharing scheme. The essential step behind this secret sharing scheme is to convert the color covert image into multiple indecipherable image shares so it cannot reveal the data within the color covert image unless combined along by some mathematical calculation. This paper proposes an advanced color covert image-sharing scheme using Arnold cat map (ACM) and VC. The random matrix-encoding scheme encodes the color covert image into an image matrix. ACM algorithm disrupts the high correlation among the pixels of the image matrix to generate an encrypted image. The generation of shares from this encrypted image is by VC that uses pixel reversal and random matrix generator. The shares one by one does not provide any information concerning the color covert image however put together they offer back the encrypted image. The projected paradigm offers 3 levels of security and through decipherment gives back the covert image without loss of information. Related examples and experimental results reveal the effectiveness of this scheme.

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Extended visual cryptography for color images using coding tables

Cited by 9 publications

References 7 publications

An overview of visual cryptography techniques

An overview of visual cryptography techniques

Visual Cryptography using Quadri Directional Search Algorithm with Remote Accessibility

Advanced Color Covert Image Sharing Using Arnold Cat Map and Visual Cryptography

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